element(ary) my(nerals), dear (rock)son!!! what’s the difference?
TRANSCRIPT
Element(ary) My(nerals), dear
(Rock)son!!!What’s the difference?
GoalsO You will be able to distinguish rocks
from minerals and elements at the end of these notes
O You will be able to describe the differences between rocks, elements, and minerals
What comes to your mind when You think of Elements?
O Smallest piece of matterO Mass number/Atomic numberO Proton/Neutron/Electron
What comes to mind when you hear the word Minerals?
O Vitamins and MineralsO ValuableO Mineral buildup (hard water)O …
Real DefinitionsO Minerals- Naturally occurring,
inorganic solid that possesses definite chemical structure with unique physical properties.
Quartz
Diamond
Characteristics of Minerals
1. Naturally Occurring2. Inorganic –Never Alive3. Must be solid4. Must have definite chemical
structure
Examples of MineralsO Quartz
O Chemical formula: SiO2
O Crystal structure: Multi-faceted(faced), elongated, with flat faces and no specific fracture pattern
O Most prized pieces are large and clear but there are many variants based on impurities
Examples of MineralsO Orthoclase Feldspar
O Chemical formula: KAlSi2O8
O Crystal Structure: molecules form 3-Dimensional network with anhedral (no organizations) crystal structure
O Appearance: Usually light pink in color, but varies
Examples of MineralsO Horneblende
O Chemical formula: Ca2(Mg, Fe, Al)5 (Al, Si)8O22(OH)2 ; the Mg, Fe, and Al are interchangeable in the first group as the Al and Si are in the second. The (OH) is a hydroxide unit.
O Crystal structure and appearance: Black irregular structure
What comes to mind when you hear the word Rocks?O DirtyO HardO ______s are dumb, throw Rocks at
them…O …
Real DefinitionsO Rock- A collection or aggregation of
minerals
Example: GraniteGranite
Quartz
Feldspar
Hornblende
Difference Between Rocks and Minerals
O RocksO Collections of
minerals and other materials
O Consolidated mixtures of minerals
O MineralsO A naturally
occurring, inorganic crystalline material with a unique chemical makeup
Characteristics of Minerals
O Minerals are identified by their physical characteristicsO LusterO ColorO HardnessO CleavageO Streak
O Diaphaneity (light transmission)
O TenacityO Crystal formO MagnetismO Refraction or
double refractionO TasteO OdorO Reactivity
Vocab.O Use the handout and your partner to
complete the vocabulary for this section in your notes. We will have a vocabulary check on Tuesday for this set and the previous set.